Improvement in ruling-machines



'dimmi tat JAMES H. BRUCE, OF NASHVILLE, TENNESSEE.l I

Lette/rs .Patent No. 93,409, dated August 10, 1869.

IMPROVEMENT IN RULINGMACHINES.

The Schedule referred to in these Letters Patent andmaking paxt'o! the same.

To all whom t may concern Bc it known that L'JAMES H. BRUCE, of Nashville, in the county of Davidson, and State of Tennessee, have invented a new and useful Improvement in Extension Pen-Holders for Ruling-Machines; and I do hereby declare'the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which- Figure l is a plan view of my-apparatus.

Figure 2 is a front elevation of the same.

Figure 3 is a side or end elevation of the same. Hitherto .the only mode of securing extension-pens in ruling-machines has been by means of a strip running the entire length ot' the pen-beam, and clamped down upon the same by means of several tlmmbscrews, inserted through the strip into said beam. The shanks ofthe extension-pens were inserted under said strip, and were all secured by tightening the above-mentioned thumb-screws. By these means the entire row of pens, ofwhatcver number it might consist, was secured by the same clamping-device.

The extension-pens are used principally for the purpose of ruling division-lines of some kin'd atthe same time that the ordinary guide-lines are being ruled, in ink of a diiierent color, and as their arrangement is arbitrary, it often follows that one or another of the clamping-screws prevents aproper arrangement of the pen.

'Ihe only remedy in such case is in changing the position of the line, or in placing the pen ohliquely..

over the table, in which latter case it will fail to produce a satisfactory line.

rIhe number of extension-pens required on any job is seldom large, but theirarrangement is extremely various; and to obviate the above-named diliiculties, which are extremely inconvenient, I have devised a way of overcoming them, which consists in an independent clamp for eaclipen, said clamp being movable upon the pen-beam, and capable ot' being xed at the exact point required, there being no obstacles to interfere.

That others maynnderstand thc construction and operation of my invention, I will particularlydescribe it; but I do not wish to be understood as confining myself to the precise details of construction shown, but only to the principles of operation, whereby the lsolidly upon the pen-beam B, and make a groove, G,

on one of its edges, which serves as a sort of guide to keep the clamp D in place.

Tile clamp D consists of two partsthe carriage,

which slides upon the pen-beam, and the clamp, which holds the pen. These are both provided with screwfastenings, to hold them in place, and the same screw may be made to perform both of these offices, though I prefer to make them separate.

The carriage slides upon the strip A, and its ends are turned down, so as to embrace the edges of said strip.

The thumb-screw E bears against the edge of the strip A, andwhen it is brought into action, the car riage is stopped and secured at that point.

The pen-clamp is located upon the top of the carriage, and consists of a perforated post, F, 'and thumbscrew G, the tang I ot' the pen being inserted through the perforation H, and secured by the screw G.

f By'ineans of the above-described device, or one substantially the same, the pen may be independently adjusted. It may be moved from; one end of the beam B to the other, and secured at any point, there being no obstacles to prevent, and when not in use it may be entirely removed from the machine.

During an adjustment of the pen in position, its position in the clamp will be unchanged, while in the modes of adjustment hitherto in use, the pen required an adjustment not only in respect to lateral position, but also in regard to position upon the paper, to secure a tlow of ink.

Having now described myinvention,

What I claim as new, is-

ll. An independent clamp for each extension-pen, substantially as and for the purpose sot forth.

2. The clamp D, constructed as described, in combination with the strip A and beam B of a rulingmachine.

" J. H. BRUCE.

Witnesses ANDREW MARSHALL, GEO. M. FLETCHER. 

